Add upload tool and related APIs (#187)

* Add utils for r2 upload

* Add the tool and new routes

* fix auth issue

* sign headers

* add comment

* use our own API key to auth signed uploads

* Restructure things slightly

* tweak

* tweak

* add comments

* tweak

* revert a thing

* twaek

* drop mime type filtering

* new incarnation of mime type filtering

* jsut allow all octet-streams

* simplify further

* tweak

* update lockfile

---------

Co-authored-by: Colin McDonnell <colinmcd94@gmail.com>

agents/codex.ts

@@ -62,7 +62,9 @@ ${mcpServerSections.join("\n\n")}
 `.trim() + "\n"
   );
 
-  log.info(`» Codex config written to ${configPath} (shell: ${bash === "enabled" ? "enabled" : "disabled"})`);
+  log.info(
+    `» Codex config written to ${configPath} (shell: ${bash === "enabled" ? "enabled" : "disabled"})`
+  );
 
   return codexDir;
 }